George crompton



'GEORGE OROMPTO-N, OF WORCESTER, MASSAGHUSET'S.

Leners Patent No. 80,608, dazed August 4, 1868.

IMPROVEMENT vIN LooMs.

litige dgreimle referat tu in there tetters ntmt mit mating niet nf tige stmt.

TO ALL WHOM ITfMAY CONGERN: o

Be it. known that I, Gnonen Cnoiirron, of the city and county of Worcester, in theV State of Massachusetts, have invented an Improvement in Looms; and I do hereby declare that the following, taken in connection i with the drawings which accompany and form part of this specification, is a description of my invention sufficient to enable those skilled in the art to practise it. j

My improvements relate to the arrangement of the lifter, depresser, and even er-levers of fancy-looms, and

the mechanism for operating such levers, the Vinvention being particularly applicable to that class o f fancy-looms in which the harness-frames are suspended to "and betwe'enthe inner ends of horizlontallleve'rs, the outer ends of which levers 4are connected by the harness-jacks. or jack-plates, (jointed 'directly to the outer ends ofthe npper levers,) and the cording whichstrings-the lower endsrof the jack-plates to3the front 'ends of the lower A horizontal levers.

My invention consists in lifting andvdepressing the jack-plates (to formV the shed) by means of lifter and dcpresser-bars, which maintain a horizontality during most of their movements informing the shed, but which are thrown into inclined positions' to give the properinclination to' the shed at the, end of each movement, o r just before the shuttleis thrown, and in giving to the evener-levers a corresponding movement. v

The drawings represent in end elevation a loom-frame, embodying my improvement. i

a denotes the frame; o, the lathe-shaft; c, thelnpper, andlol the lower horizontal harness-levers, between and to the inner ends of which the harness-frames are suspended, the outer ends ofthe upper levers being jointed to upright .hooked harness-jacks or jack-plates, thelower ends'oi' which jacks are corded to the outer endsof the lower harness-levers. i j

The hooks upon the opposite edges of these jacks are thrown in 'to connection (respectively) with a lifterbar, glgg'in front of them, or a depresser-bar, c, in rear of them, by a pattern-cylinder or chain, f, or are so strung by inclined cording as to engage normally with the lifter-bar, engaging with the depresser-bar only when thrown inwards by the pattern-cylinder or chain. f

The lifter-bar Z2 is a horizontal bar, having one end free, and working verticallyuin a-slot, g, in a bracket, it, and being jointed at its otherV end by n. fulcrum-pin, z, to an arm fixed upona slide-romy'. This end of the lifter'hasa curved leg, le, projecting down from it, (making oi' thelifter a bent-lever,) said leg being jointed to a rocker-wheel or segment,.l, which has a rocking or reciprocatingni'ovement imparted to itby a link, m, jointed to the rocker-wheel, and to a crank-pin on the lathe-shaft b. i

When the lifter is in its lowest or normal position, (totake the jackhooks,) the pin m2, which connects its leg c tothe rocker-wheel, is on a horizontal centre. As the wheel rocks, thisA pin` moves from a horizontal centre to or nearly to a vertical centre, as seen in the drawing. During the first half of this quarter rotation, it maintains a nearly vertical position, thereby causing the lifter-bar tomaintain itshorizontality; but during the latter half of its motion its movement is nearly lateral, which causes the lever or lifter-bar to rock on its joint-pin, t',

thereby inclining the bar, as seen in the drawing, and ,effecting the proper inclination of. the adjacent harnessframes. v l

The depresser-bar c is similarly hung, by a fulcrum-pin, u, to an arm on a slide rod, o, and has a vertical leg, p, jointedV to the opposite side of the' rocker-wheel Z by a pin, q, ,the depresser boing drawn down and then inclined, the same as the lifter is thrown up and then inclined. y

The evcner-bars are seen at r, one being connected tothe lifter-bar, and the other to the depresser-har, by

the slide-rods j and o, at one end, an'dllinks s at the other end, and each being jointed to its slide-rod by a pin,

u, in an arm, v, projecting from the'slide.,

By these means, the motion of cach evener is coincident with the movement of the lifter or depresser to which itis attached.

I claim, in combination with hooked jacks, the angulailifter and depresser-bars or levers, the inclination of which is effected by means substantially as set fort i 1 also claim, in combination with lifter and depresser-bars, the inclination of which is eected as and by means substantially as set forth, the evener-bars or levers, connected to the. lifter and depresser-bars by the slide-rods undy the links s, substantially as described. Y

I also claim-the rocker-wheel or segment l, for imparting movement to the liftery und depresser-bars or levers, substantially as shown and described.

GEO. CROMPTON.

Witnesses HORACE WYMAN, J. A.'WARE. 

